Question:If2a+3b=17 and 2a+2-3b+1=5, the value of a and b respectively are :
A2,3
B-2,3
C2,-3
D3,2
/35
+ Answer
D
+ ExplanationGiven equations are :
2a+3b=17,22-3.3b=5orx+y=17&4x-3y=5, where x=2a&y=3b.
On solving, we get : x = 8 and y = 9.
∴2a=8=23 and3b=9=32
:. a = 3 and b = 2